docs: clarify the format of string list configuration fields

book/src/configuration.md

@@ -1,8 +1,9 @@
 # Configuring Aura
 
 For certain settings we use all the time (e.g. language, build paths, etc.),
-Aura is configurable via `~/.config/aura/config.toml`. This file, with sensible
-defaults, can be generated via:
+Aura is configurable via `~/.config/aura/config.toml` in the [TOML
+format](https://en.wikipedia.org/wiki/TOML). This file, with sensible defaults,
+can be generated via:
 
 ```
 aura conf --gen > ~/.config/aura/config.toml
@@ -46,6 +47,12 @@ Governed within the `[aur]` section.
 | `nocheck`      | bool        | Don't run the `check()` function while building.             |
 | `skipdepcheck` | bool        | Don't perform dependency checking at all.                    |
 
+Fields of type `string list` look like this:
+
+```toml
+ignores = ["foo", "bar", "baz"]
+```
+
 ## Package Snapshots
 
 Governed within the `[backups]` section.

misc/aura.texi

@@ -1565,8 +1565,9 @@ Note that cyan nodes indicate AUR packages.
 @cindex Configuration
 
 For certain settings we use all the time (e.g. language, build paths,
-etc.), Aura is configurable via @code{~/.config/aura/config.toml}. This
-file, with sensible defaults, can be generated via:
+etc.), Aura is configurable via @code{~/.config/aura/config.toml} in the
+@url{https://en.wikipedia.org/wiki/TOML, TOML format}. This file, with
+sensible defaults, can be generated via:
 
 @example
 aura conf --gen > ~/.config/aura/config.toml
@@ -1653,6 +1654,12 @@ See @code{aura stats --lang} for available language codes.
 @tab Always reverse the search results
 @end multitable
 
+Fields of type @code{string list} look like this:
+
+@example
+ignores = ["foo", "bar", "baz"]
+@end example
+
 @heading Package Snapshots
 @cindex [backups], configuration block